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HOW TO SIZE
Inflow Protector™
Inserts
Measure each and
every manhole for which you are ordering inserts, unless
you are absolutely sure of dimensions. Your order
will be produced to your supplied dimensions. Errors in
instructions received from you may result in unusable
inserts for you because they are non-returnable. --If you
have any questions concerning the insert dimensions please call: (800)
442-7575.
The drawings below illustrate the
required measurements
The Style of insert (IP-1 or IP-2)
is determined by the the cover configuration.
Style IP-1
inserts are for manhole covers with an essentially flat
underside.
Style IP-2
inserts are designed for deeper covers - so the
C and D Dimensions must be
provided.
-
Manhole Frame Diameter (flat
bearing surface)
-
Inside Frame Diameter (clear
opening)
-
Drop Ring Diameter
-
Drop Ring Depth (from cover
underside, outside edge)
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